Two chatbots - One teaches another
The Hidden Agenda User Simulation Model (Schatzmann/Young) describes a chatbot training design in which a user simulator assembles and executes a conversational agenda, with the direct goal being to train the target chatbot. 

Perhaps you can add specificity to this design by casting the user simulator as the teacher, and creating an agenda in which it is communicating information to the (student) chatbot. The trained behavior expected is, perhaps, correct responses to topical questioning by the teacher.